The data difference that we'd be looking at is not only population based, given that our populations were a lot higher back then, but salmon are really unique in their straying capabilities. When salmon are headed up, it's true, they'll return to their natal stream; however, if they're running on a limited tank of fuel, if you want to put it that way, if they start to run out of fuel, they will stray off somewhere. What they're doing then is that they're kind of distributing those genetics elsewhere.
With what they're doing at Big Bar right now, they are collecting some brood stock at Big Bar for the potential need for emergency enhancement. However, what they're finding is that, as they test the genetics of some of these fish, it's not necessarily that certain. We're ending up with, say, either 40% certainty that the fish is from a certain stream, or they're 18% certain. When you get your percentages that low, you can't even call it certain at all.
Not only that, but with regard to the coated-wire tag program as an indicator stock, that helps assess what is coming back or where it's being caught. Now, when you have a supersmall population, those fish might travel together. They might not venture out as far. They don't need to seek as much habitat. When there's a whole bunch of fish, if we were to have 100,000 fish returning to the area, those fish would be straying out to other areas, and when they migrate out into the ocean, they would be covering different areas.
For example, the catch in the marine environment right now might not be showing that they're catching any upper Fraser stocks. However, those stocks might actually be there. They're just in such small numbers. An example is that you can't catch any fish if they're extinct, and that doesn't mean that you didn't impact them at one time.
I hope that answers your question.